Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Explain the contributions of Joseph Priestley and Antoine Lavoisier.

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Joseph Priestley was an English chemist who discovered oxygen and put forth the carbon cycle. Antoine Lavoisier was a French scientist who discovered the role of oxygen in combustion and respiration.